Dynamically calling EJBs

Hello,
I'm reasonably new to working with EJBs so perhaps this isnt possible... Can you dynamically call an EJB at runtime ie like reflection.
I know once the bean has been created I can use reflection to call the method but how can I create the bean from the beans remote home interface?
Many thanks
Michael

Got it
EJBMetaData md = theHome.getEJBMetaData();
Class homeClass = md.getHomeInterfaceClass();
EJBObject theRemote = (EJBObject)invoke(homeClass,theHome,"create");
static Object invoke(Class c,Object obj,String mname){
      Method[] methods = c.getMethods();
      String name=null;
      Object r= null;
      try {
          for(int i = 0; i<methods.length ;i++) {
             name = methods.getName();
if(name.startsWith(mname)) {
r = methods[i].invoke(obj,null);
} catch(Exception e){
e.printStackTrace();
return r;

Similar Messages

  • Error while calling ejb service call from BPM service

    Hi,
    We are using the Oracle 11.1.1.5.0
    We are calling ejb service call from BPM service to update the data to Oracle database.
    We are getting the below error when we executing the ejb service call from BPM Service.
    <Error> <EJB> <BEA-010026> <Exception occurred du
    ring commit of transaction Name=[EJB oracle.bpm.bpmn.engine.ejb.impl.BPMNDeliver
    yBean.handleCallback(java.lang.String,java.lang.String,java.lang.String,int,bool
    ean)],Xid=BEA1-45B91984D57960994897(30845116),Status=Rolled back. [Reason=javax.
    transaction.xa.XAException: JDBC driver does not support XA, hence cannot be a p
    articipant in two-phase commit. To force this participation, set the GlobalTrans
    actionsProtocol attribute to LoggingLastResource (recommended) or EmulateTwoPhas
    eCommit for the Data Source = EBSConnection],numRepliesOwedMe=0,numRepliesOwedOt
    hers=0,seconds since begin=1,seconds left=60,XAServerResourceInfo[SOADataSource_
    base_domain]=(ServerResourceInfo[SOADataSource_base_domain]=(state=rolledback,as
    signed=soa_server1),xar=SOADataSource,re-Registered = false),XAServerResourceInf
    o[ArCnTaskForms@EBSConnection@EBSConnection_base_domain]=(ServerResourceInfo[ArC
    nTaskForms@EBSConnection@EBSConnection_base_domain]=(state=rolledback,assigned=s
    oa_server1),xar=weblogic.jdbc.wrapper.JTSEmulateXAResourceImpl@fa5476,re-Registe
    red = false),SCInfo[base_domain+soa_server1]=(state=rolledback),properties=({web
    logic.jdbc.remote.EBSConnection=t3://192.168.10.114:8001, weblogic.transaction.n
    ame=[EJB oracle.bpm.bpmn.engine.ejb.impl.BPMNDeliveryBean.handleCallback(java.la
    ng.String,java.lang.String,java.lang.String,int,boolean)]}),local properties=({w
    eblogic.jdbc.jta.SOADataSource=[ No XAConnection is attached to this TxInfo ]}),
    OwnerTransactionManager=ServerTM[ServerCoordinatorDescriptor=(CoordinatorURL=soa
    server1+192.168.10.114:8001+basedomain+t3+, XAResources={eis/tibjms/Queue, eis
    /activemq/Queue, WLStore_base_domain_BPMJMSFileStore, WLStore_base_domain__WLS_s
    oa_server1, eis/fioranomq/Topic, eis/jbossmq/Queue, eis/Apps/Apps, eis/websphere
    mq/Queue, eis/AQ/aqSample, WLStore_base_domain_SOAJMSFileStore, eis/aqjms/Queue,
    WSATGatewayRM_soa_server1_base_domain, eis/sunmq/Queue, eis/pramati/Queue, SSCo
    nnectionDS_base_domain, eis/tibjms/Topic, eis/tibjmsDirect/Queue, eis/wls/Queue,
    eis/tibjmsDirect/Topic, EDNDataSource_base_domain, eis/wls/Topic, eis/aqjms/Top
    ic, RL3TST_base_domain, ArCnTaskForms@EBSConnection@EBSConnection_base_domain, S
    OADataSource_base_domain, WLStore_base_domain_UMSJMSFileStore_auto_2},NonXAResou
    rces={})],CoordinatorURL=soa_server1+192.168.10.114:8001+base_domain+t3+): weblo
    gic.transaction.RollbackException: Could not prepare resource 'ArCnTaskForms@EBS
    Connection@EBSConnection_base_domain
    JDBC driver does not support XA, hence cannot be a participant in two-phase comm
    it. To force this participation, set the GlobalTransactionsProtocol attribute to
    LoggingLastResource (recommended) or EmulateTwoPhaseCommit for the Data Source
    = EBSConnection
    at weblogic.transaction.internal.TransactionImpl.throwRollbackException(
    TransactionImpl.java:1881)
    at weblogic.transaction.internal.ServerTransactionImpl.internalCommit(Se
    rverTransactionImpl.java:345)
    at weblogic.transaction.internal.ServerTransactionImpl.commit(ServerTran
    sactionImpl.java:239)
    at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocal
    Object.java:622)
    at weblogic.ejb.container.internal.BaseLocalObject.__WL_postInvokeTxRetr
    y(BaseLocalObject.java:455)
    at weblogic.ejb.container.internal.SessionLocalMethodInvoker.invoke(Sess
    ionLocalMethodInvoker.java:52)
    at oracle.bpm.bpmn.engine.ejb.impl.BPMNDeliveryBean_of8dk6_ICubeDelivery
    LocalBeanImpl.handleCallback(Unknown Source)
    at com.collaxa.cube.engine.dispatch.message.instance.CallbackDeliveryMes
    sageHandler.handle(CallbackDeliveryMessageHandler.java:47)
    at com.collaxa.cube.engine.dispatch.DispatchHelper.handleMessage(Dispatc
    hHelper.java:140)
    at com.collaxa.cube.engine.dispatch.BaseDispatchTask.process(BaseDispatc
    hTask.java:88)
    at com.collaxa.cube.engine.dispatch.BaseDispatchTask.run(BaseDispatchTas
    k.java:64)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
    utor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
    .java:908)
    at java.lang.Thread.run(Thread.java:662)
    Caused by: javax.transaction.xa.XAException: JDBC driver does not support XA, he
    nce cannot be a participant in two-phase commit. To force this participation, se
    t the GlobalTransactionsProtocol attribute to LoggingLastResource (recommended)
    or EmulateTwoPhaseCommit for the Data Source = EBSConnection
    at weblogic.jdbc.wrapper.JTSXAResourceImpl.prepare(JTSXAResourceImpl.jav
    a:83)
    at weblogic.transaction.internal.XAServerResourceInfo.prepare(XAServerRe
    sourceInfo.java:1327)
    at weblogic.transaction.internal.XAServerResourceInfo.prepare(XAServerRe
    sourceInfo.java:513)
    at weblogic.transaction.internal.ServerSCInfo$1.run(ServerSCInfo.java:36
    8)
    at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTunin
    gWorkManagerImpl.java:528)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
    .>
    <12 Oct, 2012 12:34:40 PM IST> <Error> <oracle.soa.bpel.engine.dispatch> <BEA-00
    0000> <failed to handle message
    javax.transaction.xa.XAException: JDBC driver does not support XA, hence cannot
    be a participant in two-phase commit. To force this participation, set the Globa
    lTransactionsProtocol attribute to LoggingLastResource (recommended) or EmulateT
    woPhaseCommit for the Data Source = EBSConnection
    at weblogic.jdbc.wrapper.JTSXAResourceImpl.prepare(JTSXAResourceImpl.jav
    a:83)
    at weblogic.transaction.internal.XAServerResourceInfo.prepare(XAServerRe
    sourceInfo.java:1327)
    at weblogic.transaction.internal.XAServerResourceInfo.prepare(XAServerRe
    sourceInfo.java:513)
    at weblogic.transaction.internal.ServerSCInfo$1.run(ServerSCInfo.java:36
    8)
    at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTunin
    gWorkManagerImpl.java:528)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
    >
    <12 Oct, 2012 12:34:40 PM IST> <Error> <oracle.soa.bpel.engine.dispatch> <BEA-00
    0000> <Failed to handle dispatch message ... exception ORABPEL-05002
    Message handle error.
    error while attempting to process the message "com.collaxa.cube.engine.dispatch.
    message.instance.CallbackDeliveryMessage"; the reported exception is: Error comm
    itting transaction:; nested exception is: javax.transaction.xa.XAException: JDBC
    driver does not support XA, hence cannot be a participant in two-phase commit.
    To force this participation, set the GlobalTransactionsProtocol attribute to Log
    gingLastResource (recommended) or EmulateTwoPhaseCommit for the Data Source = EB
    SConnection
    This error contained an exception thrown by the message handler.
    Check the exception trace in the log (with logging level set to debug mode).
    ORABPEL-05002
    Message handle error.
    error while attempting to process the message "com.collaxa.cube.engine.dispatch.
    message.instance.CallbackDeliveryMessage"; the reported exception is: Error comm
    itting transaction:; nested exception is: javax.transaction.xa.XAException: JDBC
    driver does not support XA, hence cannot be a participant in two-phase commit.
    To force this participation, set the GlobalTransactionsProtocol attribute to Log
    gingLastResource (recommended) or EmulateTwoPhaseCommit for the Data Source = EB
    SConnection
    This error contained an exception thrown by the message handler.
    Check the exception trace in the log (with logging level set to debug mode).
    at com.collaxa.cube.engine.dispatch.DispatchHelper.handleMessage(Dispatc
    hHelper.java:207)
    at com.collaxa.cube.engine.dispatch.BaseDispatchTask.process(BaseDispatc
    hTask.java:88)
    at com.collaxa.cube.engine.dispatch.BaseDispatchTask.run(BaseDispatchTas
    k.java:64)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
    utor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
    .java:908)
    at java.lang.Thread.run(Thread.java:662)
    >
    Could any body help on this issue.It is little bit urgent for us to resolve.
    Thanks in advance.

    Thanks Sudipto Desmukh,
    The link is helpful me to resolve this issue.
    Thanks,
    Narasimha E

  • Dynamically called VI becomes broken inside an executable. Error 1003 from "Open VI Reference".

    Here's the problem. Dynamically called VI becomes broken inside an executable in debug executable mode Error 1003 is occuring from "Open VI Reference" Block. The computer has all of the necessary drivers, NI-VISA and NI-DAQmx. This executable is a new release of software that currently works on the PC in question. I can using NI-VISA Remote Server control the instruments from my PC using the executable. But when I put the executable on the PC I am getting this error. The only way I have been able to get this to work properly is to build the executable from the console I believe the project was created in, note that the project file has been moved to a network drive and it still works. All of the stations I have opened the project in show the VI that is being called is runnable. I've tried building the executable from the console I am deploying to and the same thing happens.
    I am honestly at a loss for ideas why this is occuring. Is this something about the way LabView works internally that may be causing this problem?
    I have trolled this forum for idea's and none have made sense to me.
    Any input would be greatly appreciated.
    -Nate

    Two ideas:
    Mass compile the project to ensure all linkages are ironed out
    Include the dynamically launched VI's into the "Always Included" section of the build spec
    Report back on if either of these actions solves your problem.
    a.lia-user-name-link[href="/t5/user/viewprofilepage/user-id/88938"] {color: black;} a.lia-user-name-link[href="/t5/user/viewprofilepage/user-id/88938"]:after {content: '';} .jrd-sig {height: 80px; overflow: visible;} .jrd-sig-deploy {float:left; opacity:0.2;} .jrd-sig-img {float:right; opacity:0.2;} .jrd-sig-img:hover {opacity:0.8;} .jrd-sig-deploy:hover {opacity:0.8;}

  • How to edit a program dynamically called from another program

    Hi all,
    Can anyone help me in coding for a program which call's another
    report dynamically from selection screen(for instance z_dynam_called)
    and retreive the whole content of the dynamically called program(z_dynam_called)
    into an internal table and replace the contents of the internal table  with some new code and put it back in z_dynam_called and save it.
    Thanks in advance.
    Needful will be rewarded with points

    Hi,
    Follow this:
    1) U can pass data from one program to another in a single login using SAP memory......
    2) u can create a DBtable update dat table using ur first pgm and fetch from second program.....
    3) U can pass the report output using EXPORT TO MEMORY addition and get it back using IMPORT FROM MEMORY..........
    Eg:
    Export the selected rows to the next program
    EXPORT final TO MEMORY ID 'ABC'.
    CALL TRANSACTION 'XXX'.
    XXX is the tcode for the other program where u want to import the values.
    In the second program
    INITIALIZATION.
    IMPORT the internal table from the first program
    IMPORT final FROM MEMORY ID 'ABC'.
    Thanks and Regards,
    Reward If Helpful

  • Calling EJB 3.0 from ALBPM

    Hi,
    I tried calling EJB 2.1 from ALBPM and it worked.
    But I was nto able to call EJB 3.0.
    Is calling EJB 3.0 supported from ALBPM 6.0.2?
    If yes, how to call a business method in EJB 3.0?

    Frank,
    Thanks. The @LOB annotations are missing.
    Create table with:
    CREATE TABLE TestBlob (id number PRIMARY KEY, xmlCol BLOB);
    INSERT INTO TestBlob VALUES(1, EMPTY_BLOB());
    The following is the complete listing for the EJB 3 class generated from table TestBlob.
    package ejb3;
    import java.io.Serializable;
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.Id;
    import javax.persistence.NamedQueries;
    import javax.persistence.NamedQuery;
    @Entity
    @NamedQueries({
    @NamedQuery(name = "Testblob.findAll", query = "select o from Testblob o")
    public class Testblob implements Serializable {
    @Id
    @Column(nullable = false)
    private Long id;
    private byte[] xmlCol;
    public Testblob() {
    public Testblob(Long id) {
    this.id = id;
    public Long getId() {
    return id;
    public void setId(Long id) {
    this.id = id;
    public byte[] getXmlCol() {
    return xmlCol;
    public void setXmlCol(byte[] xmlCol) {
    this.xmlCol = xmlCol;
    }

  • EJB 2.1 session bean calling EJB 3 session bean?

    I have a WL 10 (JDK 1.5/EE 5) server that has several EJB 3 stateless session beans deployed and working well. But now I need to allow a JBoss 3.2.3 (JDK 1.4) EJB 2.1 session bean make remote calls into these EJB 3 EJBs. Can this even work?
    It seems to me that EJB 3 calling EJB 2 would be fine, but not in the reverse?

    I have a WL 10 (JDK 1.5/EE 5) server that has several EJB 3 stateless session beans deployed and working well. But now I need to allow a JBoss 3.2.3 (JDK 1.4) EJB 2.1 session bean make remote calls into these EJB 3 EJBs. Can this even work?
    It seems to me that EJB 3 calling EJB 2 would be fine, but not in the reverse?

  • Calling EJB with HTML via SERVLET

    Hi,
    I used a writen example that calls EJB from HTML via SERVLET. Example name is Bonus. The problem I have is that the HTML throw error while calling SERVLET. I dont figure out what seams to be a problem. Someone know?
    I wonder if the problem is in servlet? The EJB is fine!
    christian
    HTML CODE:(bonus.html)
    <HTML>
    <HEAD>
    <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1250"/>
    <TITLE>untitled1</TITLE>
    </HEAD>
    <BODY BGCOLOR = "WHITE">
    <BLOCKQUOTE>
    <H3>Bonus Calculation</H3>
    <FORM METHOD="GET" ACTION="BonusAlias">
    <P>Enter social security Number:<P>
    <INPUT TYPE="TEXT" NAME="SOCSEC"></INPUT>
    </P>
    Enter Multiplier:
    <P>
    <INPUT TYPE="TEXT" NAME="MULTIPLIER"></INPUT>
    </P>
    <INPUT TYPE="SUBMIT" VALUE="Submit">
    <INPUT TYPE="RESET">
    </FORM>
    </BLOCKQUOTE>
    </BODY>
    </HTML>
    SERVLET CODE:(BonusServlet.java)
    package mypackage5;
    import mypackage5.Calc;
    import mypackage5.CalcHome;
    import mypackage5.impl.CalcBean;
    import javax.servlet.*;
    import javax.servlet.http.*;
    import java.io.*;
    import javax.naming.*;
    import javax.rmi.PortableRemoteObject;
    import java.beans.*;
    public class BonusServlet extends HttpServlet {
    CalcHome homecalc;
    public void init(ServletConfig config) throws ServletException{
    //Look up home interface
    try{
    //InitialContext ctx = new InitialContext();
    //Object objref = ctx.lookup("Calc");
    //homecalc = (CalcHome)PortableRemoteObject.narrow(objref, CalcHome.class);
    Context context = new InitialContext();
    CalcHome calcHome = (CalcHome)PortableRemoteObject.narrow(context.lookup("Calc"), CalcHome.class);
    Calc calc;
    catch (Exception NamingException) {
    NamingException.printStackTrace();
    public void doGet (HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    String socsec = null;
    int multiplier = 0;
    double calc = 0.0;
    PrintWriter out;
    response.setContentType("text/html");
    String title = "EJB Example";
    out = response.getWriter();
    out.println("<HTML><HEAD><TITLE>");
    out.println(title);
    out.println("</TITLE></HEAD><BODY>");
    try{
    Calc theCalculation;
    //Get Multiplier and Social Security Information
    String strMult = request.getParameter("MULTIPLIER");
    Integer integerMult = new Integer(strMult);
    multiplier = integerMult.intValue();
    socsec = request.getParameter("SOCSEC");
    //Calculate bonus
    double bonus = 100.00;
    theCalculation = homecalc.create();
    calc = theCalculation.calcBonus(multiplier, bonus);
    catch (Exception CreateException){
    CreateException.printStackTrace();
    //Display Data
    out.println("<H1>Bonus Calculation</H1>");
    out.println("<P>Soc Sec: " + socsec + "<P>");
    out.println("<P>Multiplier: " +
    multiplier + "<P>");
    out.println("<P>Bonus Amount: " + calc + "<P>");
    out.println("</BODY></HTML>");
    out.close();
    public void destroy() {
    System.out.println("Destroy");

    The error is that page cannot be found! When I run only the servlet it works, when I run the HTML page and enter the field throws eror that the page cannot be found!
    thanks
    Christian

  • Dynamic call for records in a table

    hI,
    Im having a ztable, the structure is as follows:
    tabold fldold tabnew fldnew
    The records in this table is are:
    1.yvbap  posnr xvbap posnr
    2.yvbak  auart xvbak auart
    3.yvbak  augru xvbak augru.
    Now, i have to use this table dynamically to check each and every record in the program:mv45afzz.
    So, my problem is that, i have to dynamically pass these records which contains table name and its field name.
    i can write as: xvbap-posnr = yvbap-posnr for all the three records (the values will come from sales order tranx, report: mv45afzz)
    but in future if the records are added then i have to again change the code, so this shouldn't happen.
    It should dynamically call all the records in this table and check the condition.
    Thanx
    Rohith

    Hello Rohith
    What is your question???
    You described a few ingredients of your scenario (not all of them) and do not really explain your requirements.
    Given the descriptions of the Z-table fields I assume you need to check whether OLD values are equal to NEW values.
    If this assumption is correct then the solution is quite simple (except for XVBAP / YVBAP: Does this mean single entries or looping over all entries?)
    DATA:
      lt_ztable     TYPE STANDARD TABLE OF zstructure,
      ls_ztable     TYPE zstructure.
      FIELD-SYMBOLS:
        <lt_tab>     TYPE table,
        <ls_struct_old>    TYPE any,
        <ls_struct_new>   TYPE any,
        <ld_old>    TYPE any,
       <ld_new>    TYPE any.
    " Read entries from z-table
      SELECT * FROM ztable INTO table lt_ztable.
      LOOP AT lt_ztable INTO ls_ztable.
        ASSIGN (ls_ztable-tabold) TO <ls_struct_old>.
        ASSIGN (ls_ztable-tabnew) TO <ls_struct_new>.
        ASSIGN COMPONENT (ls_ztable-fldold) OF STRUCTURE <ls_struct_old> TO <ld_old>.
        ASSIGN COMPONENT (ls_ztable-fldnew) OF STRUCTURE <ls_struct_new> TO <ld_new>.
        IF ( <ld_old> = <ld_new> ).
          " do something...
        ENDIF.
      ENDLOOP.
    For the sake of simplicity I did not add the required statements for checking successful ASSIGN's.
    Regards
      Uwe

  • Dynamic call for a ref cursor: ORA-21779

    Hi,
    Here is an environment:
    create or replace
    PACKAGE PKG_GETDATA AS
    TYPE cursor_type IS REF CURSOR;
    Procedure SimpleGet (cData In Out Cursor_type);
    Procedure DynamicGet (cData In Out Cursor_type);
    END PKG_GETDATA;
    create or replace
    PACKAGE BODY "PKG_GETDATA" AS
    Procedure SimpleGet (cData In Out Cursor_type) As
    Begin
    Open cData For
    Select 1 from Dual;
    End SimpleGet;
    Procedure DynamicGet (cData In Out Cursor_type) As
    Begin
    Execute Immediate 'Begin PKG_GETDATA.SIMPLEGET(:1); End;'
    Using In Out cData;
    End DynamicGet;
    END PKG_GETDATA;
    So- first simple get works fine:
    Declare
    cData PKG_GETDATA.Cursor_type;
    aNumber Number;
    Begin
    PKG_GETDATA.SimpleGet (cData);
    LOOP
    FETCH cData INTO aNumber;
    EXIT WHEN cData%ROWCOUNT > 5 OR cData%NOTFOUND;
    dbms_output.put_line (aNumber);
    END LOOP;
    close cData;
    End;
    BUT dynamic call does not works at all!:
    Declare
    cData PKG_GETDATA.Cursor_type;
    aNumber Number;
    Begin
    PKG_GETDATA.DynamicGet (cData);
    LOOP
    FETCH cData INTO aNumber;
    EXIT WHEN cData%ROWCOUNT > 5 OR cData%NOTFOUND;
    dbms_output.put_line (aNumber);
    END LOOP;
    close cData;
    End;
    It throws ORA-21779 exception; what is more- it does work on 10.2 db version but does not work on 11.2 version! Could anyone explain that?
    Regards
    Bartlomiej D.

    Hi,
    Believe me, it may be very handful while working with handlers.
    Anyway- could anyone help me on that?
    Regards
    Bartlomiej D.

  • Dynamic call of a vi with a reference stored in a global variable

    Hello,
    I am trying to program a VI which calls DAQmx functions in some cases, in other cases DAQmx may not even be installed. To prevent a broken arrow on machines where DAQmx is not installed, I want to use a sub-VI containing the DAQmx function calls which is called dynamically by a main VI. For speed I want to prevent continuous opening and closing the VI reference, so I want to store the reference to the sub VI in a global variable. In this variable I also want to store the Analog Input Task. I want to use an initialization VI to write the VI reference of the sub VI and to configure and start the Analog Input Task and write the Task ID to that Global, too. In that way I was hoping to be able to improve the performance of the dynamic calls and the Task calls. BUT - when I write the refererence and task to the Global and read it out from another VI, the reference is not valid anymore and the Analog Input task is also not valid, even if both the initialization VI and the Global are still open (but not running). Does somebody have an idea how to solve that? It is a bit difficult to describe, so here is what I want to do in a shorter description :
    - run a initialization VI which
      defines a reference to a sub VI which will be called dynamically later on
      and a AI task ID definining a DAQmx physical channel configuration to use for subsequent read cycles
      and writes both (VI reference and AI task) to a global variable
    - run another VI which
      reads the VI reference of the VI to call dynamically from that global
      runs the corresponding VI dynamically
      the dynamically called VI performs an AI task corresponding to the DAQmx task ID read from that global (it reads an analog value for instance from the  
      physical channel configured by that AI task) 
    Why all that? To prevent creating and destroying the VI reference for each call of the sub VI for speed. And to use the configured DAQmx channel for subsequent read tasks only if the subVI is called dynamically - if it is not, then the application will not see the DAQmx calls and therefore no broken arrow will occur if no DAQmx is installed on the machine.
    Can somebody help me with this? Why can't I store and read out the reference to the sub VI to/from a global, and why is the AI task not valid when read out from the dynamically called sub VI? I am somewhat lost with all that...
    Thanks in advance,
    Gabs

    Uh - I am almost getting crazy with that
    Kevin, that solution is the right one for programming an application. In that case everything will work fine. But during testing, it is more convenient to call all VIs from their front panels one after another. That's how I'm doing it for everything that needs to be exchanged between such VIs: store them either in a global or in a functional global variable. In that way the user can "play around" with the VIs without wiring them together in a main VI. Therefore, after some thinking I liked Davids idea with that daemon VI (I solved that by adding a boolean in the initialization VI to choose if that daemon is necessary - during testing phase - or not - when using the VIs in a main application). BUT:
    David: It does not work!!! I have exactly done what you proposed and this daemon VI is really running, having a True/False frame with a constant of False wired to the selector and holding both the functional global and the dynamically to call VI in the True frame. In that way, after initialization is finished, both VIs are still running but idle. Anyway, when I read back the value of the reference or the DAQmx task, it is invalid again!
    That really costs just too much time. Does anybody have any idea what to do now? David, I was hoping that your suggestion would solve the problem, because it would be logical that it would - why then is LabVIEW destroying the reference and task anyway even if that daemon VI containing the functional global is still running???
    Regards,
    Gabs

  • Dynamic call of a static method of an static attribute

    Hi all,
    is it possible to call dynamically a static method of a static attribute of a class.
    The statement without dynamic call would look like this:
    cl_test_class=>static_attribute=>static_method( ).
    I would like to do it like this:
    ('CL_TEST_CLASS')=>static_attribute=>static_method( ).
    Netiher the one nor the other way works for me - I'm getting the error "The notation used is reserved for business object classes".
    Regards, Stefan

    I guess, it is not possible to call method using the short form (parameters in brackets) is not possible in Dynamic Access. You may need to get the attribute first and then call the method.
    CLASS lcl_main DEFINITION.
      PUBLIC SECTION.
        CLASS-DATA: o_same TYPE REF TO lcl_main.
        METHODS: run.
    ENDCLASS.                    "lcl_main DEFINITION
    CLASS lcl_main IMPLEMENTATION.
      METHOD run.
        WRITE: 'success'.
      ENDMETHOD.                    "run
    ENDCLASS.                    "lcl_main IMPLEMENTATION
    START-OF-SELECTION.
      DATA: lo_same TYPE REF TO lcl_main.
      CREATE OBJECT lcl_main=>o_same.
    *  lcl_main=>o_same=>run( ).
      TRY.
          FIELD-SYMBOLS: <fs> TYPE REF TO lcl_main.
          ASSIGN ('LCL_MAIN')=>('O_SAME') TO <fs>.
          CALL METHOD <fs>->('RUN').
        CATCH cx_root.
      ENDTRY.
    Regards,
    Naimesh Patel

  • WDP calling EJB and passing objects of classes from Java project

    Hi.
    We have <b>Java</b> project which contains some classes common for all projects (like xxx.Version).
    We have <b>EJB</b> project which defines EJB interface using these common classes (like getVersion(String,int): xxx.Version and getCurrency(String,xxx.Version,int):xxx.Currency ).
    We have <b>Web Dynpro</b> project which calls EJB:
    1. Lookup is successful
    2. call to getVersion is successful
    3. call to getCurrency fails with <b>NoSuchMethodException</b>:
    xxx.XXXObjectImpl0.getCurrency(java.lang.String, xxx.Version, int)
         at java.lang.Class.getMethod(Class.java:986)
         at com.sap.engine.services.rmi_p4.reflect.LocalInvocationHandler.invokeInternal(LocalInvocationHandler.java:51)
         at com.sap.engine.services.rmi_p4.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:53)
         at $Proxy346.getCurrency(Unknown Source)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:324)
         at com.sap.engine.services.ejb.session.stateless_sp5.ObjectStubProxyImpl.invoke(ObjectStubProxyImpl.java:187)
         at $Proxy347.getCurrency(Unknown Source)
         at xxx.XXX.getCurrencyWrapper(XXXXX.java:24)
    How can I set dependencies to get this running?
    Thanks to all
           Volker

    Hi,
    Is it available in the interface you are using..
    If the answer is yes.. you might have probably forgotten to deploy the EJBs ear file after making the changes..
    Rebuild it.. and deploy the EJB s ear file again..
    It will solve the problem.. If that also does not work,it might be a problem with the cache.. restart the server..
    It should work now !
    Regards
    Bharathwaj

  • Upgrade : Issue with Specical character being used in 4.6C ( Dynamic calls)

    Hi ,
      We are working on Upgrade from 4.6C to ECC6.0 . in SPAU phase we are facing an issue :
    When we are trying to see the variants from the program, it says that the program contains Syntax Error
    "In Unicode programs, the "&" character can not appear in names as it does here in the name 'op&xv0' "
    The 'op&xv0' is a form. we tried changing the form name, but couldnt get the PERFORM stmt for the form and it might be a dynamic call. what can we do for this type of programs?
    Please also suggest how we can identify the places where that particular Subroutine is being called.
    Thanks & Regds
    Teja

    This is probably an operation defined in Tcode PE04. You can change the operation subroutine name and then modify the code accordingly in the report.
    Go to PE04 and put in operation name, suposedly &xv0.
    Instead of using standard name suggested by SAP use custom name (for example opYvx0) and then change in the report as well and it should be ok.

  • How to Call EJB from coldfusion

    I need to call EJB that's created in JBoss from coldfusion.
    I'm getting different errors depending on how I set the home object
    and provider url.
    If I prefix provider url with jnp://, then I get the
    following error
    The connection to the remote JNDI server on host jnp at port
    1099 has failed (as have all backup hosts listed, if any) - please
    verify that the server is running and the NamingService is
    available
    If I take the jnp out and keep just the ip address and port,
    then i get the following error
    null (no security manager: RMI class loader disabled).
    So I'm not sure what the issue is and I haven't used this
    feature before.
    Here's my code

    I tries to call custom EJBfrom custom component received
    follwong error
    ERROR [STDERR] javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException:
    No ClassLoaders found for: com.mycom.myapp.action.interfaces.pm.ejb.PmFacadeRemote
    (no security manager: RMI class loader disabled)]
    any idea?
    Thanks
    YogLC

  • How can I call EJB from JSP/Servlets in iWS?

    Hi!!
    My JSP/Servlets are on iWS, and I deploy EJB on iAS.
    In this case, I don't know how JSP/Servlet call EJb on iAS.
    I'd like to know how I can set JNDI name in JSP/Servlet on iWS.
    I will thank you if you give me a simple example source using JSP/Servlet
    and EJB.
    Thanks in advance!!!
    - Park-

    Park,
    Why Are you running your JSP/Servlets in iWS instead of iAS? For whatever
    reason,
    look at the Converter sample from iAS. You will be doing RMI/IIOP in this
    case and the sample explains in detail what to do.
    hth,
    -robert
    "SungHyun, Park" <[email protected]> wrote in message
    news:9jpfmt$[email protected]..
    Hi!!
    My JSP/Servlets are on iWS, and I deploy EJB on iAS.
    In this case, I don't know how JSP/Servlet call EJb on iAS.
    I'd like to know how I can set JNDI name in JSP/Servlet on iWS.
    I will thank you if you give me a simple example source using JSP/Servlet
    and EJB.
    Thanks in advance!!!
    - Park-

Maybe you are looking for

  • Folio Builder Panel - progress bars?

    Not a major thing, I know, but still... What happened to the upload progress bars in the Folio Builder Panel? I do like being able to monitor progress.

  • Dreaded Error 2096

    I just recieved the iPod Touch. Anxious to get it started, I went on to Apple in order to download the version 8 iTunes as well as the newest version of Quicktime Player. At first, I encountered the "compatibility" error for Quicktime; so I turned it

  • Error when Converts rows to columns dynamically in clob data type

    Hi I am using below pl/sql statement SELECT NO, MAX (DECODE (NAME, 'A', VALUE1, NULL)) AS A, MAX (DECODE (NAME, 'B', VALUE1, NULL)) AS B, MAX (DECODE (NAME, 'C, VALUE1, NULL)) AS C, MAX (DECODE (NAME, 'D', VALUE1, NULL)) AS D FROM ( SELECT NO, RTRIM

  • Maximum length of  the Path that can be given while creating a directory

    Hi I would like to know the maximum length of a path that can be given in solaris? e.g i have to create a directory like this mkdir /a/b/c..../z ]---> what can be the max length ? in the same way while reading a path also. i heard something like getc

  • Cannot start embedded oc4j

    I just installed oracle 9.0.2 on rh linux 8.0 - no problems. I installed jdev 9.03 and seems to work. However I cannot start the embedded oc4j server to test a quick jsp page. I get the following error: IllegalArgumentException: Signal already used b